Patent 7834075 was granted and assigned to Bayer MaterialScience on November, 2010 by the United States Patent and Trademark Office.
A poly(ester)carbonate compositions characterized by its flame resistance and high impact strength is disclosed. The composition that containsbranched aromatic poly(ester)carbonate, a graft polymer wherein the graft base is silicone rubber or silicone-acrylate rubber, talc, phosphorus-containing flameproofing agent, and an inorganic boron compound, andan optional anti-dripping agentsatisfies enhanced fire-protection requirements.